Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Balam A. Willemsen"'
Autor:
Neal Fenzi, Victor Plessky, Patrick Turner, Julius Koskela, Bryant Garcia, Balam A. Willemsen, R. B. Hammond
Publikováno v:
2019 IEEE International Ultrasonics Symposium (IUS).
Recently, hierarchical cascading accelerated with graphics processing units (GPUs) has proven efficient for accelerating 3D periodic finite-element method (FEM) analysis of acoustic wave devices. However, the limited memory available in GPUs severely
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02774833b1ce43a677614c3f9965cd74
https://doi.org/10.1109/ultsym.2019.8926183
https://doi.org/10.1109/ultsym.2019.8926183
Autor:
Julius Koskela, Bob Hammond, P. Maniadis, Balam A. Willemsen, Victor Plessky, Patrick Turner, Neal Fenzi, Filip Iliev
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
The SAW on rotated “leaky” Y-cuts LiTaO3 and LiNbO3 is a dominantly localized near surface slow shear-horizontal wave, which is weakly coupled to the fast shear bulk wave. Any surface perturbation can lead to radiation of bulk-acoustic waves from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::495f076504d6ce1be99e53e5e09ba3f1
https://doi.org/10.1109/ultsym.2017.8091800
https://doi.org/10.1109/ultsym.2017.8091800
Autor:
P. Maniadis, Balam A. Willemsen, Filip Iliev, Neal Fenzi, Bob Hammond, Patrick Turner, Julius Koskela, Victor Plessky
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::442863168400e97da30c7d670078c713
https://doi.org/10.1109/ultsym.2017.8091849
https://doi.org/10.1109/ultsym.2017.8091849
Autor:
Patrick Turner, Filip Iliev, Julius Koskela, P. Maniadis, Balam A. Willemsen, Victor Plessky, Neal Fenzi, Bob Hammond
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
SAW filter technology includes different substrates, multilayered electrodes from Al, Cu, Pt, …, dielectric sublayers and over-layers, etc. Temperature compensated SAW filters have been developed that have performance competitive with FBARs. Tradit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39945921f10d8695eb0921e93023a19f
https://doi.org/10.1109/ultsym.2017.8091538
https://doi.org/10.1109/ultsym.2017.8091538
Autor:
Takahiro Sato, Patrick Turner, Balam A. Willemsen, R. B. Hammond, James R. Costa, C. H. Lee, S. McHugh, J. D. Ha, Neal Fenzi, N. Rice
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
Driven by the need for high data-rates and improved cell coverage, mobile phone filters are required to process increasingly high RF power levels. The simultaneous demand for smaller filter footprints makes designing a filter for high-power performan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b7061a8d0b41ef0f6901aa85cb1f0c5
https://doi.org/10.1109/ultsym.2017.8091515
https://doi.org/10.1109/ultsym.2017.8091515
Publikováno v:
2017 IEEE MTT-S International Microwave Symposium (IMS).
Modern high-performance SAW filters utilize thin-film technology to optimize losses, temperate stability, filter bandwidth, and manufacturing sensitivity. Fast design of these complicated structures calls for accurate and more general simulation tool
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c3530c3b00d4f4e877256bce0775ff3
https://doi.org/10.1109/mwsym.2017.8058903
https://doi.org/10.1109/mwsym.2017.8058903
Autor:
P. Maniadis, R. B. Hammond, Patrick Turner, Julius Koskela, Victor Plessky, Balam A. Willemsen, Neal Fenzi
Publikováno v:
2016 IEEE International Ultrasonics Symposium (IUS).
Application of finite element methods (FEM) to the simulation of SAW devices has been constrained by the large number of degrees-of-freedom required, resulting in large memory usage and long computation times. Here, we propose a hierarchical cascadin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eeaea16bda6cab81a09ab4f03dc2f215
https://doi.org/10.1109/ultsym.2016.7728574
https://doi.org/10.1109/ultsym.2016.7728574
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 56:901-912
Since power handling of superconducting resonators is severely limited by current density saturation, it is proposed to form resonators having their incident power and resulting currents divided within interior arrays of "basic resonators" (A properl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50a8358bce0613581d153575d070320d
https://doi.org/10.1109/tmtt.2008.919657
https://doi.org/10.1109/tmtt.2008.919657
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 15:956-959
A low loss electronically tunable filter was demonstrated using HTS/Au MEMS switched capacitor arrays. The two-pole filter was tuned by simultaneously varying the capacitance of each resonator by equal amounts. A K factor of between 3,500 and 5,000 w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1016fd6bc1a70d6ad3fa2502452da2a
https://doi.org/10.1109/tasc.2005.850136
https://doi.org/10.1109/tasc.2005.850136
Publikováno v:
Physical Review B. 56:11989-11996
Z˜ s(H)5Rs(H)1iXs(H) of YBa2Cu3O72d thin films was measured using suspended patterned resonators. Z ˜ s(H) is shown to be a direct measure of the flux density B(H) enabling a very precise test of models of flux penetration. Three regimes of field-d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daff7ba0b899d4438a9b436ae579ba99
https://doi.org/10.1103/physrevb.56.11989
https://doi.org/10.1103/physrevb.56.11989